I downloaded an iOS app on my MacBook pro and tried dragging it into Simulator. Simulator registers the download, and the app icon appears on the little iPhone display, but it won't let me open it. Can I not run existing iOS apps in simulator?
Seen this (dated) SO thread?
https://stackoverflow.com/questions/517463/how-can-i-install-a-ipa-file-to-my-iphone-simulator